If you need more than one HDMI or SDI input, we recommend using an external Thunderbolt PCIe expander box and one or more Blackmagic PCI cards.
Thunderbolt PCIe Expander Boxes:
- Sonnettech PCIe Card Expansion Systems (Various desktop enclosures with 1 to 3 slots, 19 inch Rack mount version)
- OWC Mercury Helios (1 Slot desktop)
Blackmagic Design Cards:
- 4 HDMI inputs – Blackmagic Design DeckLink Quad HDMI Recorder
- 4 SDI in-/outputs – Blackmagic Design DeckLink Duo 2
- 8 SDI in-/outputs – Blackmagic Design DeckLink Quad 2 (Note: This card features mini SDI connectors that need adapters and are more delicate)